Summary: Melvyn Bragg and his guests discuss the Concordat of Worms. This treaty between the papacy and the Holy Roman Empire, signed in 1122, put an end, at least for a time, to years of power struggle and bloodshed. It created a historic distinction between secular power and spiritual authority, defining more clearly the respective powers of monarchs and the Church. Melvyn Bragg is joined by Henrietta Leyser, Emeritus Fellow of St Peter's College, University of Oxford; Kate Cushing, Reader in Medieval History at Keele University and John Gillingham, Emeritus Professor of History at the London School of Economics and Political Science
